Abeth hawks



E. HAWKS.-

Cooking Stove. No. 64,102. v Patented Apr" 23,1867.

N.FETER5, PHOTO UTHOGRAPNER WASHING N D 'gnitrit giants gestalt ffirr.

ELIZABETH HAWKS, OF TROY, NEW YORK.

Letters Patent No. 64,102, dated Aprz'i 23, 1867 AUXILIARY AIR-CHAMBER I'OB. STOVES.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, ELIZABETH HAWKS, of the city of Troy, in the county of Rensselaer, and State of New York, have invented an Auxiliary Radiating Air-Chamber for Stoves, Heaters, and Furnaces of all descriptions, and that the following is a full, clear, and exact description of the same, reference being bad to the accompanying drawings, which form a part of this specification, and in which- Figure 1 shows the chamber as applied to an ordinary cook stove.

Figure 2 is a vertical cross-section through the stove and chamber.

Theinvention, as illustrated by the drawings, consists simplyof an oblong rectangular cap or cover, open on the bottom. and side presented to the fire-grate. The front, or outer side has a slot, 13, of conven icnt length, through which the draught is admitted to supply the fire. This slot is also used for the admission of the raker C, figs. 1 and 2, for the purpose of cleaning the grate of ashes, $30., whenever the same is clogged thereby. The cover or chamber A, when applied to or constructed with the stove, heater, or furnace, as the case may be, is so fitted as to preclude the admission of any draught except through the heated chamber H, fig. 2. By this means a large air-chamber or reservoir is made, through which the air must pass before it reaches thefire. During such passage it becomes highly heated and rarefied, thereby securing a diminished consumption of fuel, and furnishing a largelyincreased radiating surface. Another and most valuable feature of my invention, and one which most especially recommends it to every housekeeper in the country, is the fact that by throwing open the doors in front of the fire-grate ofordinary stoves, and applying this chamber or guard, as it might very appropriately be designated, not a particle of dust or ashes is thrown into the room when the grate is being dumped or raked; but, on the contrary, the dust, smoke, ashes, and cinders are all confined within the chamber H, as seen in fig. 2, and all trouble or annoyance on account of the same is entirely avoided. Experiment has further demonstrated that when this chamber is applied as above, a much higher temperature of the lower strata of the atmosphere in the room is obtained, thereby securing a more. equable temperature with a small amount of fuel through all parts of the room.

Among the other advantages secured by this device are, first, a nearly perfect consumption of the gases and vapors generated by combustion, actual trial having demonstrated that when communication vvith'the chimney or escape-flue is entirely out off, no escape of any noxious gases or vapors is observable, thereby showing a very nearly perfect consumption of the fuel and gases; second, when applied to or constructed with cook stoves of ordinary patterns, the plate covering the hearth, and also the front doors, may bedispensed with, thus obtaining a much larger radiating surface on the bottom of the stove, by means of which the temperature of the lower part of the room is rendered more uniform. This device may be cast with stoves and heaters in the same manner as reservoirs or other external or internal appendages may be attached. If cast in a separate piece or pieces, it may be attached to the grate or ash-pit by means of bolts passing perpendicularly through the chamber H and hearth-plate,and secured in the ordinary manner. Or the patterns for the stove, range, or heater may be so constructed as to form an internal chamber exposed to the heat generated in the fire box, so that no draught can reach the fuel except by first passing through this chamber. It may beconstructed either on the sides of the fire-box admitting the draught at one end of the chamber, and during its passage through the snme rarcfying it and passing it into the grate at the opposite end/or by constructing said chamber immediately under the grate or fire-box, so that the draught cannot reach the fire until after having passed through this chamber. Thcconstruction and application of this device and principle must nocessarilybe as various as there are different kinds of stoves and heaters used.

The form and application of this device, as shown by the drawings, is but one of many involving the same principles. By slight modifications in the shape of this invention it may be adapted to all classes of heaters, furnaces, boilers, and to all conditions where it is deemed advisable to supply the fire with a heated draught, or when the floating dust or ashes are a nuisance incident to the agitation or cleaning of the grate.

I do not claim a supplemental door to be closed over a portion of the grate for the purpose of preventing dust from flowing out into the room, nor do I claim a shieldl to be placed over a. gridiron or cooking vessel, in front of a stove grate; but what I do claim, and desire to secure by Letters Patent, is-- The shield A, with the open horizontal slot B near its top, constructed and used as and for the purpose set forth.

ELIZABETH HAWKS.

Witnesses:

. FRANKLIN Sco'rr, ZINA P. GREEN. 

